The correct answer is:
a. the Han revived Confucian learning suppressed by the Qin.
The Han Dynasty (206 BCE – 220 CE) is known for reviving and promoting Confucianism as its guiding philosophy, in contrast to the Qin Dynasty (221–206 BCE) which had suppressed Confucian thought in favor of Legalism. The Han government's emphasis on Confucian values influenced its administrative practices and education.